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Partition fluid separation

a technology of ceramic monoliths and fluids, applied in separation processes, liquid degasification, membranes, etc., can solve the problems of reduced power output of internal combustion engines, limited availability of high ron fuel, and generally more expensive fuel purchases

Inactive Publication Date: 2015-09-15
CORNING INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a pervaporation element that includes a ceramic monolith with parallel channels separated by porous walls. A functional membrane coating a portion of the walls separates a fluid into two parts, a retentate and a permeate. The membrane defines discrete through segments separated by uncoated walls. The membrane coated ceramic monolith is placed in an onboard fuel separator with a fuel heater and cooler. The technology allows for efficient separation of fuels in vehicles.

Problems solved by technology

At some operating conditions, some internal combustion engines may have reduced power output due to a requirement to retard spark timing during the compression stroke to avoid pre-ignition of the fuel leading to engine knock.
However, fuel with a higher RON is generally more expensive to purchase than fuel with a lower RON.
The availability of the high RON fuel may also be limited by market conditions.
However, such fuel separation devices may be prone to degradation of performance of separation of the high RON portion and the low RON portion of the fuel and may be costly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

Synthesis of DENO-D400 Pre-Polymer

[0091]An aliphatic epoxy-polyether amine crosslinked membrane polymer was made with near equivalent amounts, 47.0 g of 1,2,7,8-Diepoxy-n-octane, or DENO (Aldrich) and 63.0 g of 400 mw Polypropylene Glycol bis 2 aminopropyl ether, or D400 (Aldrich / Huntsman). These were combined with 12.0 g Benzyl alcohol catalyst and 331.2 g toluene in a 1000 ml reaction flask, equipped with condenser and stirrer (Eurostar PWR CV81) operated at 250 rpm, and reacted for 2 hours at 100° C. This mixture was allowed to cool to 60° C., while stirring and monitoring torque. The reaction was quenched by dilution with toluene to a final pre-polymer concentration of 25% when the torque increase corresponded to 54% conversion by nmr (torque reading=10). The final epoxy:NH ratio was 1.05. The product was refrigerated at 0° C. prior to use.

example 2

Coating of Partitioned Monolith

[0092]A nominally 2.4″ dia.×8″ long porous Mullite monolith, having nominally 1.8 mm channel diameter, was coated with a series of microparticulate metal oxide slurries and calcined as described in U.S. Pat. Pub No. 2008 / 0035557 to obtain a porous substrate having a titania surface of nominal 0.01 micron porosity. The monolith was partitioned into quadrant segments by fastening and sealing end rings with a ceramic filled epoxy cement. Each quadrant segment had 82 channels, with a surface area of 0.087 m2 and a total area of 0.348 m2. The partitioned ceramic monolith was designated 2L2R-33M.

[0093]The 0.01 micron porosity partitioned monolith was coated with a DENO-D400 polymer precursor prepared as described in Example 1 and coated in a manner similar to that described in Provisional US Pat Application based on 2011EM006 Example 4. Several coatings (7) were required to obtain a leak free polymer film. The first two coatings were preceded by wetting of t...

example 3

Gasoline Testing of Partitioned Monolith

[0097]The partitioned membrane monolith from Example 3 was evaluated for separation of gasoline into higher and lower octane fractions as described in U.S. Pat. No. 7,803,275 B2. The monolith was mounted vertically, with the inlet at the top of the housing and the retentate and permeate outlets at the low side. A regular grade 87 AKI (92.6 RON) US E10 gasoline was used as feed. Process conditions were established with a feed rate of 0.35 g / s at 400 kPag and about 155° C. inlet temperature. At these conditions about 80% of the gasoline feed is vaporized. The mixed phase feed was fed through a Bete WL½-90 spray nozzle (Bete Fog Nozzles, Inc, Greenfield, Mass.) to distribute the feed to the monolith channels of the segment selected. Unused sections were masked with a Viton face seal (160) at both ends of the monolith as described earlier and illustrated in FIGS. 6 and 7. The membrane module was insulated and operated adiabatically. A vacuum was m...

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Abstract

A pervaporation element includes a ceramic monolith having an array of parallel channels separated by porous channel walls extending along an axial length of the monolith, and a functional membrane coating a first plurality of the porous channel walls along the axial length of the monolith. The functional membrane functions to separate a fluid into a retentate portion and a permeate portion. The porous channel walls coated by the functional membrane define a plurality of discrete through segments, where each of the discrete through segments are separated from one another by a plurality of uncoated porous channel walls. Fluid entering the discrete through segments is separated into a retentate portion that exits in substantial portion through the discrete through segments and a permeate portion that exits the ceramic monolith radially outward through the uncoated porous channel walls and through a skin of the monolith.

Description

[0001]This application claims the benefit of priority under 35 USC §119 of U.S. Provisional Application Ser. No. 61 / 563,860 filed Nov. 28, 2011 the content of which is relied upon and incorporated herein by reference in its entirety.FIELD[0002]The present specification generally relates to partitioned ceramic monoliths and, more specifically, to partitioned ceramic monoliths for separating fluids into constituent components.TECHNICAL BACKGROUND[0003]In general, gasoline-fueled internal combustion engines initiate a spark during the compression stroke to ignite vaporized gasoline in the combustion chamber. At some operating conditions, some internal combustion engines may have reduced power output due to a requirement to retard spark timing during the compression stroke to avoid pre-ignition of the fuel leading to engine knock. To advance spark timing, fuel with a higher knock resistance, denoted by a higher Research Octane Number (RON), may be used. However, fuel with a higher RON i...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B01D61/36B01D63/06B01D71/80B01D71/52F02M27/00B01D71/60
CPCB01D61/366B01D63/066B01D71/80B01D61/362B01D71/52B01D71/60B01D2313/10B01D2313/21F02M27/00
Inventor DRURY, KENNETH JOSEPHDUNNING, DARRYL LJOHNSON, PAUL OAKLEYLUCCHESI, ROBERTPARTRIDGE, RANDALL DSTERNQUIST, BRANDON THOMAS
Owner CORNING INC
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